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Andrews TC-88 Cam Upgrade Kit for converting all 1999-06 Twin Cam Big Twins to the 2006-up roller chain drive with hydraulic
chain tensioners. Instead of super powered spring adjusters the roller cam chain adjuster use engine oil pressure to maintain prop-
er chain tension and roller chain camshafts have larger journal bearing for extra support on the sprocket shaft ends. Kit includes
cams only and requires separate purchase of 2007-up oil pump, support plate, chain tensioners sprockets and hardware. See
camshaft components page for additional parts required to complete conversion. Note: For 1999, 2000 and 2001 engines a rear
cam drive sprocket with an ignition trigger ring must be used.
VT No. Grind Timing .053 .020 Lift TDC Springs Application
Stock Intake -3.5/4.0 216.5 256 .474 .087 Stock Stock 06 cam data listed for reference: All ‘06 Dynas
Exhaust 41/-1.5 219.5 259 .474 .110
are fuel injection only; no carburetors.
10-6812 12N
02/34 216 252 .489 .091 Stock Bolt-in cam grind with the the same output as a stock cam
37/05 220 259 .489 .106
Slight power increase but no returning necessary!
10-6821 21N
10/30 220 255 .498 134 Stock Bolt-in cam: More torque for all around riding with heavy
40/08 228 24
.498 .121
bikes, stock compression ratios and stock pistons.
Similar to #23 cam for EV80 (1700-4800 RPM).
10-6826 26N
11/35 226 262 .490 .138 Stock Bolt-in cam 88-95 inches and stock compression ratio.
41/09 230 266 .490 .112
Great for two up touring, this cam will add torque and HP
at lower and middle RPM ranges (1800-5200 RPM).
10-6831 31N
10/46 236 272 .510 .174 Stock Great cam for motors with 95 inches and 9.8 to 10.2 CR.
52/08 240 276 .510 .120
Lower TDC lift for easy installation. Similar to TW37 with
different timing. (2000-5600 RPM).
10-6837 37N
18/38 236 272 .510 .174 Stock Hot street cams for 88 or 95 inches. 80+ rear wheel HP
46/14 240 276 .510 .148
possible with well tuned 88 incher, more with 95. Smooth
idle, broad torque (2200-5600 RPM). 9.0 to 9.5 CR.
10-6844 44N
21/41 242 279 .495 .182 Stock For engines with 88 or 95 inches and compression ratios
49/17 246 283 .495 .158
from 9.5 to 10.2; Max torque range; 2300-5800 RPM.
10-6850 50N
20/48 248 283 .510 .184 Stock Designed for easy installation in 95 inch motors with
54/18 252 287 .510 .168
stock heads for 9.5 to 9.8 CR. (2400 to 6000 RPM).
10-6855 55N
22/46 248 283 .550 .197 Hi-Lift Great cam for 95 inch with 9.8 to 10.2 C.R.
52/20 252 292 .550 .181
Max HP-torque at mid and upper RPMs (2600 to 6200).
10-6015 Sprocket with trigger ring for 1999-01 applications only
*Note: Timing and duration listed for .053 cam lift
Cams for TC-88